[MacPorts] #67849: py-autobahn: Add py311-autobahn subport

[MacPorts]

#67849: py-autobahn: Add py311-autobahn subport
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 Reporter:  ryandesign   |      Owner:  mojca
     Type:  enhancement  |     Status:  assigned
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  py-autobahn
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 Adding py311-autobahn is currently needed to update buildbot to use
 python311.

 Not sure if the version of autobahn we have in MacPorts is compatible with
 python311; there are newer versions available so it could be updated.

 There are other related crossbar ports that may need updates as well.

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Ticket URL: <https://trac.macports.org/ticket/67849>
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